微型多孔材料
催化作用
金属有机骨架
材料科学
化学工程
选择性
吸附
纳米晶
纳米颗粒
纳米技术
无机化学
化学
物理化学
有机化学
工程类
复合材料
作者
Zhizhong Zheng,Heng Xu,Zheng Xu,Jianping Ge
出处
期刊:Small
[Wiley]
日期:2017-12-04
卷期号:14 (5)
被引量:68
标识
DOI:10.1002/smll.201702812
摘要
Abstract A Zr‐based metal–organic framework (MOF) catalyst, Pt/Au@Pd@UIO‐66, is assembled, where UIO‐66 is Zr 6 O 4 (OH) 4 (BDC) 6 (BDC = 1,4‐benzenedicarboxylate). The gold nanoparticles (NPs) act as the core for the epitaxial growth of Pd shells, and the core–shell monodispersed nanosphere Au@Pd is encapsulated into UIO‐66 to control its morphology and impart nanoparticle functionality. The microporous nature of UIO‐66 assists the adsorption of Pt NPs, which in turn enhances the interaction between NPs and UIO‐66, favoring the formation of isolated and well‐dispersed Pt NP active sites. This MOF exhibits high catalytic activity and CO product selectivity for the reverse‐water–gas‐shift reaction in a fixed‐bed flow reactor.
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